Stable operating regime for traveling wave devices

Details Stable operating regime for traveling wave devices Stable operating regime for traveling wave devices

1997-08-20

2000-01-11

Bovernick, Rodney

Coherent light generators

Free electron laser

372 37, H01S 300

Patent

active

060143878

ABSTRACT:
Autophase stability is provided for a traveling wave device (TWD) electron beam for amplifying an RF electromagnetic wave in walls defining a waveguide for said electromagnetic wave. An off-axis electron beam is generated at a selected energy and has an energy noise inherently arising from electron gun. The off-axis electron beam is introduced into the waveguide. The off-axis electron beam is introduced into the waveguide at a second radius. The waveguide structure is designed to obtain a selected detuning of the electron beam. The off-axis electron beam has a velocity and the second radius to place the electron beam at a selected distance from the walls defining the waveguide, wherein changes in a density of the electron beam due to the RF electromagnetic wave are independent of the energy of the electron beam to provide a concomitant stable operating regime relative to the energy noise.

REFERENCES:
patent: 5280490 (1994-01-01), Conde et al.
W. L. Menninger, B. G. Danly, and R. J. Temkin, "Autophase Cyclotron Autoresonance maser Amplifiers," Phys. Flluid B 4 (5), pp. 1077-1080, May 1992.
H. Takeda, S. Segall, P. Diament, and A. Luccio, "Stable Off-Axis Electgron Orbits and Their Radiation Spectrum in a Helical Wiggler," Nuclear Instruments and Methods in Physics Research, A237, pp. 145-153, 1985, No month.

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